It allows to get into the affected computer.
It uses the infected computer to take malicious actions on other users.
It uses stealth techniques to avoid being detected by the user.
It uses anti-monitoring techniques in order to prevent it being detected by antivirus companies.
It spreads
, across the Internet.

Affected platforms:

Windows 2003/XP/2000/NT/ME/98/95

First detected on:

March 24, 2010

Detection updated on:

March 24, 2010

Statistics

No

Brief Description

Downloader.XMK is a Trojan, which although seemingly inoffensive, can actually carry out attacks and intrusions.

It affects productivity, preventing tasks from being carried out:

In the affected computer:
it converts the computer into a platform for taking malicious action surreptitiously: spam sending, launch of Denial of Service attacks, malware distribution, etc.

It uses stealth techniques to avoid being detected by the user:

It uses techniques included in its code to hide itself while it is active.

It uses several methods in order to avoid detection by antivirus companies:

It prevents scanning tools from running, such as Windows Registry Editor, FileMonitor, etc.

Downloader.XMK uses the following propagation or distribution methods:

Exploiting vulnerabilities with the intervention of the user: exploiting vulnerabilities in file formats or applications. To exploit them successfully it needs the intervention of the user: opening files, viewing malicious web pages, reading emails, etc.

Via Internet, exploiting remote vulnerabilities: attacking random IP addresses, in which it tries to insert a copy of itself by exploiting one or more vulnerabilities.